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Section 2. Hazards Identification OSHA/HCS Status : This Material Is Considered Hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200)

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Section 2. Hazards Identification OSHA/HCS Status : This Material Is Considered Hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200) SAFETY DATA SHEET Flammable Liquefied Gas Mixture: 2-Methylpentane / 2-Methylhexane / 2, 3-Dimethylheptane / Benzene / Cyclohexane / Cyclopentane / Dodecane / Ethyl Benzene / Ethyl Cyclohexane / Hexane / Isobutane / Isobutyl Cyclohexane / Isooctane / Isopentane / Isopropylcyclohexane / Methyl Cyclohexane / N-Butane / N-Butyl Benzene / N-Decane / N-Heptane / N-Nonane / N-Octane / N-Pentane / N-Propyl Benzene / Toluene Section 1. Identification GHS product identifier : Flammable Liquefied Gas Mixture: 2-Methylpentane / 2-Methylhexane / 2, 3-Dimethylheptane / Benzene / Cyclohexane / Cyclopentane / Dodecane / Ethyl Benzene / Ethyl Cyclohexane / Hexane / Isobutane / Isobutyl Cyclohexane / Isooctane / Isopentane / Isopropylcyclohexane / Methyl Cyclohexane / N-Butane / N-Butyl Benzene / N-Decane / N-Heptane / N-Nonane / N-Octane / N-Pentane / N-Propyl Benzene / Toluene Other means of : Not available. identification Product type : Liquefied gas Product use : Synthetic/Analytical chemistry. SDS # : 021986 Supplier's details : Airgas USA, LLC and its affiliates 259 North Radnor-Chester Road Suite 100 Radnor, PA 19087-5283 1-610-687-5253 24-hour telephone : 1-866-734-3438 Section 2. Hazards identification OSHA/HCS status : This material is considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200). Classification of the : FLAMMABLE GASES - Category 1 substance or mixture GASES UNDER PRESSURE - Liquefied gas SKIN IRRITATION - Category 2 GERM CELL MUTAGENICITY - Category 1 CARCINOGENICITY - Category 1 TOXIC TO REPRODUCTION (Fertility) - Category 2 TOXIC TO REPRODUCTION (Unborn child) - Category 2 SPECIFIC TARGET ORGAN TOXICITY (SINGLE EXPOSURE) (Narcotic effects) - Category 3 SPECIFIC TARGET ORGAN TOXICITY (REPEATED EXPOSURE) - Category 1 AQUATIC HAZARD (ACUTE) - Category 2 AQUATIC HAZARD (LONG-TERM) - Category 2 GHS label elements Hazard pictograms : Signal word : Danger Hazard statements : Extremely flammable gas. May form explosive mixtures with air. Contains gas under pressure; may explode if heated. May cause frostbite. May displace oxygen and cause rapid suffocation. Causes serious eye irritation. Causes skin irritation. Date of issue/Date of revision : 12/7/2017 Date of previous issue : 12/7/2017 Version : 1.01 1/20 Flammable Liquefied Gas Mixture: 2-Methylpentane / 2-Methylhexane / 2,3-Dimethylheptane / Benzene / Cyclohexane / Cyclopentane / Dodecane / Ethyl Benzene / Ethyl Cyclohexane / Hexane / Isobutane / Isobutyl Cyclohexane / Isooctane / Isopentane / Isopropylcyclohexane / Methyl Cyclohexane / N- Butane / N-Butyl Benzene / N-Decane / N-Heptane / N-Nonane / N-Octane / N-Pentane / N-Propyl Benzene / Toluene Section 2. Hazards identification May cause genetic defects. May cause cancer. Suspected of damaging fertility or the unborn child. May cause drowsiness or dizziness. Causes damage to organs through prolonged or repeated exposure. Toxic to aquatic life with long lasting effects. Precautionary statements General : Read and follow all Safety Data Sheets (SDS’S) before use. Read label before use. Keep out of reach of children. If medical advice is needed, have product container or label at hand. Close valve after each use and when empty. Use equipment rated for cylinder pressure. Do not open valve until connected to equipment prepared for use. Use a back flow preventative device in the piping. Use only equipment of compatible materials of construction. Always keep container in upright position. Approach suspected leak area with caution. Prevention : Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Wear protective gloves. Wear eye or face protection. Wear protective clothing. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Use only outdoors or in a well-ventilated area. Avoid release to the environment. Do not breathe gas. Do not eat, drink or smoke when using this product. Wash hands thoroughly after handling. Response : Collect spillage. Get medical attention if you feel unwell. IF exposed or concerned: Get medical attention. IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER or physician if you feel unwell. IF ON SKIN: Wash with plenty of soap and water. Take off contaminated clothing and wash it before reuse. If skin irritation occurs: Get medical attention. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical attention. Leaking gas fire: Do not extinguish, unless leak can be stopped safely. Eliminate all ignition sources if safe to do so. Storage : Store locked up. Protect from sunlight. Store in a well-ventilated place. Disposal : Dispose of contents and container in accordance with all local, regional, national and international regulations. Hazards not otherwise : Liquid can cause burns similar to frostbite. classified Section 3. Composition/information on ingredients Substance/mixture : Mixture Other means of : Not available. identification Product code : 021986 Ingredient name % CAS number benzene 58 - 88 71-43-2 isobutane 0.0001 - 20 75-28-5 N-Butane 0.0001 - 20 106-97-8 isopentane 14.5 - 15 78-78-4 n-pentane 13 - 14 109-66-0 2-methylpentane 9 - 9.1 107-83-5 n-hexane 8 - 9 110-54-3 methylcyclohexane 7 - 7.1 108-87-2 cyclohexane 6.5 - 6.6 110-82-7 heptane 5 - 6 142-82-5 2,2,4-trimethylpentane 4.2 - 4.4 540-84-1 ethylcyclohexane 3 - 4 1678-91-7 octane 2.6 - 2.7 111-65-9 toluene 2.3 - 2.4 108-88-3 Nonane 1.5 - 1.6 111-84-2 ethylbenzene 1 - 1.4 100-41-4 Date of issue/Date of revision : 12/7/2017 Date of previous issue : 12/7/2017 Version : 1.01 2/20 Flammable Liquefied Gas Mixture: 2-Methylpentane / 2-Methylhexane / 2,3-Dimethylheptane / Benzene / Cyclohexane / Cyclopentane / Dodecane / Ethyl Benzene / Ethyl Cyclohexane / Hexane / Isobutane / Isobutyl Cyclohexane / Isooctane / Isopentane / Isopropylcyclohexane / Methyl Cyclohexane / N- Butane / N-Butyl Benzene / N-Decane / N-Heptane / N-Nonane / N-Octane / N-Pentane / N-Propyl Benzene / Toluene Section 3. Composition/information on ingredients cyclopentane 1 - 1.1 287-92-3 propylbenzene 0.7 - 0.8 103-65-1 n-decane 0.6 - 0.7 124-18-5 isopropylcyclohexane 0.5 - 0.6 696-29-7 2-methylhexane 0.3 - 0.4 591-76-4 2,3-dimethylpentane 0.3 - 0.4 565-59-3 Isobutyl Cyclohexane 0.2 - 0.3 1678-98-4 n-Dodecane 0.0001 - 0.05 112-40-3 butylbenzene 0.0001 - 0.05 104-51-8 Any concentration shown as a range is to protect confidentiality or is due to batch variation. There are no additional ingredients present which, within the current knowledge of the supplier and in the concentrations applicable, are classified as hazardous to health or the environment and hence require reporting in this section. Occupational exposure limits, if available, are listed in Section 8. Section 4. First aid measures Description of necessary first aid measures Eye contact : Immediately flush eyes with plenty of water, occasionally lifting the upper and lower eyelids. Check for and remove any contact lenses. Continue to rinse for at least 10 minutes. Get medical attention. Inhalation : Remove victim to fresh air and keep at rest in a position comfortable for breathing. If it is suspected that fumes are still present, the rescuer should wear an appropriate mask or self-contained breathing apparatus. If not breathing, if breathing is irregular or if respiratory arrest occurs, provide artificial respiration or oxygen by trained personnel. It may be dangerous to the person providing aid to give mouth-to-mouth resuscitation. Get medical attention. If necessary, call a poison center or physician. If unconscious, place in recovery position and get medical attention immediately. Maintain an open airway. Loosen tight clothing such as a collar, tie, belt or waistband. Skin contact : Flush contaminated skin with plenty of water. Remove contaminated clothing and shoes. To avoid the risk of static discharges and gas ignition, soak contaminated clothing thoroughly with water before removing it. Continue to rinse for at least 10 minutes. Get medical attention. In case of contact with liquid, warm frozen tissues slowly with lukewarm water and get medical attention. Do not rub affected area. Wash clothing before reuse. Clean shoes thoroughly before reuse. Ingestion : Remove victim to fresh air and keep at rest in a position comfortable for breathing. Get medical attention. If necessary, call a poison center or physician. Ingestion of liquid can cause burns similar to frostbite. If frostbite occurs, get medical attention. Never give anything by mouth to an unconscious person. If unconscious, place in recovery position and get medical attention immediately. Maintain an open airway. Loosen tight clothing such as a collar, tie, belt or waistband. As this product rapidly becomes a gas when released, refer to the inhalation section. Most important symptoms/effects, acute and delayed Potential acute health effects Eye contact : Causes serious eye irritation. Liquid can cause burns similar to frostbite. Inhalation : Can cause central nervous system (CNS) depression. May cause drowsiness or dizziness. Skin contact : Causes skin irritation. Dermal contact with rapidly evaporating liquid could result in freezing of the tissues or frostbite. Frostbite : Try to warm up the frozen tissues and seek medical attention. Ingestion : Can cause central nervous system (CNS) depression. Ingestion of liquid can cause burns similar to frostbite. Over-exposure
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